Rain Delay Expiration Webhook

Does anyone have any insight into what webhook, if any, is fired when a rain delay expires? It would seem it would be RAIN_DELAY_OFF, but as far as I can tell that is only sent when the rain delay is cancelled by the user, not if it expires. I’m trying to update the HomeAssistant component, and as of now there’s nothing to indicate that a rain delay has been allowed to expire which can lead to an inaccurate state. Thanks!

Nothing is sent for expirations.